|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace BitWasp\Bitcoin\Transaction\Factory; |
|
4
|
|
|
|
|
5
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Adapter\EcAdapterInterface; |
|
6
|
|
|
use BitWasp\Bitcoin\Key\PublicKeyFactory; |
|
7
|
|
|
use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface; |
|
8
|
|
|
use BitWasp\Bitcoin\Script\Classifier\OutputClassifier; |
|
9
|
|
|
use BitWasp\Bitcoin\Script\ScriptFactory; |
|
10
|
|
|
use BitWasp\Bitcoin\Script\ScriptInfo\ScriptHash; |
|
11
|
|
|
use BitWasp\Bitcoin\Script\ScriptInterface; |
|
12
|
|
|
use BitWasp\Bitcoin\Signature\SignatureSort; |
|
13
|
|
|
use BitWasp\Bitcoin\Signature\TransactionSignatureInterface; |
|
14
|
|
|
use BitWasp\Bitcoin\Signature\TransactionSignatureFactory; |
|
15
|
|
|
use BitWasp\Bitcoin\Transaction\TransactionInterface; |
|
16
|
|
|
|
|
17
|
|
|
class TxSignerContext |
|
18
|
|
|
{ |
|
19
|
|
|
/** |
|
20
|
|
|
* @var \BitWasp\Bitcoin\Script\ScriptInfo\ScriptInfoInterface |
|
21
|
|
|
*/ |
|
22
|
|
|
private $scriptInfo; |
|
23
|
|
|
|
|
24
|
|
|
/** |
|
25
|
|
|
* @var null|ScriptInterface |
|
26
|
|
|
*/ |
|
27
|
|
|
private $redeemScript; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @var ScriptInterface |
|
31
|
|
|
*/ |
|
32
|
|
|
private $prevOutScript; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* @var string |
|
36
|
|
|
*/ |
|
37
|
|
|
private $prevOutType; |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* @var string |
|
41
|
|
|
*/ |
|
42
|
|
|
private $scriptType; |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* @var array |
|
46
|
|
|
*/ |
|
47
|
|
|
private $signatures = []; |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* @var PublicKeyInterface[] |
|
51
|
|
|
*/ |
|
52
|
|
|
private $publicKeys = []; |
|
53
|
|
|
|
|
54
|
|
|
/** |
|
55
|
|
|
* @var EcAdapterInterface |
|
56
|
|
|
*/ |
|
57
|
|
|
private $ecAdapter; |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* @param EcAdapterInterface $ecAdapter |
|
61
|
|
|
* @param ScriptInterface $outputScript |
|
62
|
|
|
* @param ScriptInterface $redeemScript |
|
63
|
|
|
*/ |
|
64
|
129 |
|
public function __construct( |
|
65
|
6 |
|
EcAdapterInterface $ecAdapter, |
|
66
|
|
|
ScriptInterface $outputScript, |
|
67
|
|
|
ScriptInterface $redeemScript = null |
|
68
|
|
|
) { |
|
69
|
129 |
|
$handler = ScriptFactory::info($outputScript, $redeemScript); |
|
70
|
117 |
|
$this->scriptType = $this->prevOutType = $handler->classification(); |
|
71
|
117 |
|
if ($handler instanceof ScriptHash) { |
|
72
|
42 |
|
$this->scriptType = $handler->getInfo()->classification(); |
|
73
|
36 |
|
} |
|
74
|
|
|
|
|
75
|
|
|
// Gather public keys from redeemScript / outputScript |
|
76
|
117 |
|
$this->ecAdapter = $ecAdapter; |
|
77
|
117 |
|
$this->redeemScript = $redeemScript; |
|
78
|
117 |
|
$this->prevOutScript = $outputScript; |
|
79
|
117 |
|
$this->scriptInfo = $handler; |
|
80
|
|
|
|
|
81
|
|
|
// According to scriptType, extract public keys |
|
82
|
117 |
|
$this->publicKeys = $this->scriptInfo->getKeys(); |
|
83
|
117 |
|
} |
|
84
|
|
|
|
|
85
|
|
|
/** |
|
86
|
|
|
* @return ScriptInterface |
|
87
|
|
|
* @throws \RuntimeException |
|
88
|
|
|
*/ |
|
89
|
36 |
|
public function getRedeemScript() |
|
90
|
|
|
{ |
|
91
|
36 |
|
if (null === $this->redeemScript) { |
|
92
|
6 |
|
throw new \RuntimeException('No redeem script was set'); |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
30 |
|
return $this->redeemScript; |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
/** |
|
99
|
|
|
* |
|
100
|
|
|
* @return string |
|
101
|
|
|
*/ |
|
102
|
105 |
|
public function getPrevOutType() |
|
103
|
|
|
{ |
|
104
|
105 |
|
return $this->prevOutType; |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
/** |
|
108
|
|
|
* @return string |
|
109
|
|
|
*/ |
|
110
|
87 |
|
public function getScriptType() |
|
111
|
|
|
{ |
|
112
|
87 |
|
return $this->scriptType; |
|
113
|
|
|
} |
|
114
|
|
|
|
|
115
|
|
|
/** |
|
116
|
|
|
* @return array|\BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface[] |
|
117
|
|
|
*/ |
|
118
|
87 |
|
public function getPublicKeys() |
|
119
|
|
|
{ |
|
120
|
87 |
|
return $this->publicKeys; |
|
121
|
|
|
} |
|
122
|
|
|
|
|
123
|
|
|
/** |
|
124
|
|
|
* @return array |
|
125
|
|
|
*/ |
|
126
|
69 |
|
public function getSignatures() |
|
127
|
|
|
{ |
|
128
|
69 |
|
return $this->signatures; |
|
129
|
|
|
} |
|
130
|
|
|
|
|
131
|
|
|
/** |
|
132
|
|
|
* @param integer $idx |
|
133
|
|
|
* @param TransactionSignatureInterface $signature |
|
134
|
|
|
* @return $this |
|
135
|
|
|
*/ |
|
136
|
81 |
|
public function setSignature($idx, TransactionSignatureInterface $signature = null) |
|
137
|
|
|
{ |
|
138
|
81 |
|
$this->signatures[$idx] = $signature; |
|
139
|
81 |
|
return $this; |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
|
|
/** |
|
143
|
|
|
* @param PublicKeyInterface[] $publicKeys |
|
144
|
|
|
* @return $this |
|
145
|
|
|
*/ |
|
146
|
39 |
|
public function setPublicKeys(array $publicKeys) |
|
147
|
|
|
{ |
|
148
|
39 |
|
$this->publicKeys = $publicKeys; |
|
149
|
39 |
|
return $this; |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
|
|
/** |
|
153
|
|
|
* @param TransactionInterface $tx |
|
154
|
|
|
* @param int $inputToExtract |
|
155
|
|
|
* @return $this |
|
156
|
|
|
*/ |
|
157
|
81 |
|
public function extractSigs(TransactionInterface $tx, $inputToExtract) |
|
158
|
|
|
{ |
|
159
|
81 |
|
$parsed = $tx->getInput($inputToExtract) |
|
160
|
81 |
|
->getScript() |
|
161
|
81 |
|
->getScriptParser() |
|
162
|
81 |
|
->decode(); |
|
163
|
|
|
|
|
164
|
81 |
|
$size = count($parsed); |
|
165
|
|
|
|
|
166
|
81 |
|
switch ($this->getScriptType()) { |
|
167
|
81 |
|
case OutputClassifier::PAYTOPUBKEYHASH: |
|
168
|
|
|
// Supply signature and public key in scriptSig |
|
169
|
39 |
|
if ($size === 2) { |
|
170
|
|
|
$this->signatures = [TransactionSignatureFactory::fromHex($parsed[0]->getData(), $this->ecAdapter)]; |
|
171
|
|
|
$this->publicKeys = [PublicKeyFactory::fromHex($parsed[1]->getData(), $this->ecAdapter)]; |
|
172
|
|
|
} |
|
173
|
|
|
|
|
174
|
39 |
|
break; |
|
175
|
42 |
|
case OutputClassifier::PAYTOPUBKEY: |
|
176
|
|
|
// Only has a signature in the scriptSig |
|
177
|
18 |
|
if ($size === 1) { |
|
178
|
|
|
$this->signatures = [TransactionSignatureFactory::fromHex($parsed[0]->getData(), $this->ecAdapter)]; |
|
179
|
|
|
} |
|
180
|
|
|
|
|
181
|
18 |
|
break; |
|
182
|
24 |
|
case OutputClassifier::MULTISIG: |
|
183
|
24 |
|
$redeemScript = $this->getRedeemScript(); |
|
184
|
24 |
|
$this->signatures = array_fill(0, count($this->publicKeys), null); |
|
185
|
|
|
|
|
186
|
24 |
|
if ($size > 2 && $size <= $this->scriptInfo->getKeyCount() + 2) { |
|
187
|
6 |
|
$sigHash = $tx->getSignatureHash(); |
|
188
|
6 |
|
$sigSort = new SignatureSort($this->ecAdapter); |
|
189
|
6 |
|
$sigs = new \SplObjectStorage; |
|
190
|
|
|
|
|
191
|
6 |
|
foreach (array_slice($parsed, 1, -1) as $item) { |
|
192
|
|
|
/** @var \BitWasp\Bitcoin\Script\Parser\Operation $item */ |
|
193
|
81 |
|
if ($item->isPush()) { |
|
194
|
6 |
|
$txSig = TransactionSignatureFactory::fromHex($item->getData(), $this->ecAdapter); |
|
195
|
6 |
|
$hash = $sigHash->calculate($redeemScript, $inputToExtract, $txSig->getHashType()); |
|
196
|
6 |
|
$linked = $sigSort->link([$txSig->getSignature()], $this->publicKeys, $hash); |
|
197
|
|
|
|
|
198
|
6 |
|
foreach ($this->publicKeys as $key) { |
|
199
|
6 |
|
if ($linked->contains($key)) { |
|
200
|
6 |
|
$sigs[$key] = $txSig; |
|
201
|
6 |
|
} |
|
202
|
6 |
|
} |
|
203
|
6 |
|
} |
|
204
|
6 |
|
} |
|
205
|
|
|
|
|
206
|
|
|
// We have all the signatures from the input now. array_shift the sigs for a public key, as it's encountered. |
|
207
|
6 |
|
foreach ($this->publicKeys as $idx => $key) { |
|
208
|
6 |
|
$this->signatures[$idx] = isset($sigs[$key]) ? $sigs[$key] : null; |
|
209
|
6 |
|
} |
|
210
|
6 |
|
} |
|
211
|
|
|
|
|
212
|
24 |
|
break; |
|
213
|
81 |
|
} |
|
214
|
|
|
|
|
215
|
81 |
|
return $this; |
|
216
|
|
|
} |
|
217
|
|
|
|
|
218
|
|
|
/** |
|
219
|
|
|
* @return \BitWasp\Bitcoin\Script\Script |
|
220
|
|
|
*/ |
|
221
|
63 |
|
public function regenerateScript() |
|
222
|
|
|
{ |
|
223
|
63 |
|
$signatures = array_filter($this->getSignatures()); |
|
224
|
63 |
|
return $this->scriptInfo->makeScriptSig($signatures, $this->publicKeys); |
|
225
|
|
|
} |
|
226
|
|
|
|
|
227
|
|
|
/** |
|
228
|
|
|
* @return int |
|
229
|
|
|
*/ |
|
230
|
48 |
|
public function getRequiredSigCount() |
|
231
|
|
|
{ |
|
232
|
48 |
|
return $this->scriptInfo->getRequiredSigCount(); |
|
233
|
|
|
} |
|
234
|
|
|
|
|
235
|
|
|
/** |
|
236
|
|
|
* @return int |
|
237
|
|
|
*/ |
|
238
|
54 |
|
public function getSigCount() |
|
239
|
|
|
{ |
|
240
|
54 |
|
return count(array_filter($this->signatures)); |
|
241
|
|
|
} |
|
242
|
|
|
|
|
243
|
|
|
/** |
|
244
|
|
|
* @return bool |
|
245
|
|
|
*/ |
|
246
|
30 |
|
public function isFullySigned() |
|
247
|
|
|
{ |
|
248
|
|
|
// Compare the number of signatures with the required sig count |
|
249
|
30 |
|
return $this->getSigCount() === $this->getRequiredSigCount(); |
|
250
|
|
|
} |
|
251
|
|
|
} |
|
252
|
|
|
|
Bit-Wasp /
bitcoin-php
